As children walked the streets of Memphis on Halloween going door-to-door in search for candy, one neighbor spotted a violent sex offender near children on Evergreen.

She said the man made her feel uneasy. She said it was a gut feeling that led to the arrest.

A group of trick-or-treaters had just left Ava McDaniel's Midtown's home. She and her husband were out on the front porch enjoying the warn evening while they handed out candy. They heard the crunch of leaves on the sidewalk. That caused them to expect another group of trick-or-treaters at their door.

"But when it stopped, the noise stopped, we got up to see what it was," Ava McDaniel said. "And he was just standing and he was staring. He wasn't moving. Just staring."

The man was seen with his hands in his coat pockets. His gaze was focused on the McDaniel's home.

McDaniel said with young children around, it made her feel like something was not right.

"My first thought was just to run him off, but I didn't want to do that and have him wander through the neighborhood. So that's why I decided to call the police," McDaniel said.

Police arrested Simon Evans, who also goes by the name Roscoe.

He has a criminal history that includes charges of incest, aggravated sexual battery, and domestic assault.

Law enforcement officers in Shelby County arrested at least two registered sex offenders accused of violating the rules of their probation on Halloween night.

Detective said one man, Terence Davis, was caught using Facebook on his phone to talk to a 13-year-old girl. He was pretending to be a 16-year-old boy. According to the rules of his probation, Davis was not supposed to be using a Facebook account to contact children.

Officers said they found another man, Simon Evans, in an empty lot between houses while children were trick-or-treating in the neighborhood.